677
FXUS65 KBYZ 181928
AFDBYZ
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BILLINGS MT
128 PM MDT SUN OCT 18 2026
KEY MESSAGES
- SEASONABLY WARM AND MAINLY DRY CONDITIONS THROUGH MID-WEEK.
- A WEATHER SYSTEM MAY BRING COOLER TEMPERATURES, WINDY
CONDITIONS, AND PRECIPITATION TO THE AREA FRIDAY INTO SATURDAY,
THOUGH CONFIDENCE REMAINS LOW REGARDING IMPACTS.
DISCUSSION
TODAY THROUGH SATURDAY...
COOLER CONDITIONS EXIST TODAY BEHIND A COLD FRONT PASSAGE. WITH
THIS, HIGH TEMPERATURES MAINLY IN THE 60S ARE FORECAST UNDER SUNNY
TO MOSTLY SUNNY SKIES. WINDS ARE ALSO LIGHTER OUT OF THE EAST,
THOUGH OCCASIONAL GUSTS IN THE TEENS TO LOW 20S (MPH) WILL OCCUR
THROUGH THE DAY. TONIGHT, LOW TEMPERATURES WILL GENERALLY BE IN
THE 30S AND 40S (F). OVER THE PLAINS OF EASTERN MONTANA (GENERALLY
EAST OF ROSEBUD COUNTY), SOUTHEASTERLY WINDS WILL INCREASE
TONIGHT INTO MONDAY, PEAKING DURING THE DAY MONDAY. WITH THIS,
WIND GUSTS IN THE 20S AND 30S (MPH) WILL BE COMMON, WITH A FEW
WIND GUSTS INTO THE LOW 40S (MPH) OVER EASTERN PORTIONS OF FALLON
AND CARTER COUNTIES.
MONDAY THROUGH MID-WEEK WILL SEE A RETURN TO SEASONABLY WARM
TEMPERATURES AS A RIDGE OF HIGH PRESSURE OVER THE CENTRAL UNITED
STATES NUDGES INTO THE REGION. WHILE A DRY COLD FRONT PASSAGE ON
TUESDAY MAY DECREASE TEMPERATURES A BIT, HIGHS IN THE 60S AND 70S
ARE GENERALLY FORECAST, WARMEST ON THURSDAY. THROUGH THIS TIME,
MAINLY DRY CONDITIONS ARE FORECAST, THOUGH THERE IS AN OCCASIONAL
SLIGHT CHANCE OF PRECIPITATION OVER THE MOUNTAINS OF SOUTHERN
MONTANA AND NORTHERN WYOMING DUE TO A DEVELOPING LOW PRESSURE
SYSTEM OFF THE WEST COAST OF THE UNITED STATES.
THIS LOW PRESSURE SYSTEM IS EXPECTED TO MOVE ONSHORE THURSDAY AND
PROGRESS NORTHEASTWARD TOWARDS OUR REGION FRIDAY INTO SATURDAY.
WHILE UNCERTAINTY REMAINS REGARDING THE EVOLUTION OF THIS SYSTEM
THROUGH OUR REGION, THE MOST LIKELY SCENARIO AT THIS POINT LOOKS
TO BE A COLD FRONT WITH SCATTERED PRECIPITATION AS THE LOW
PRESSURE SYSTEM TO THE SOUTH MERGES WITH A TROUGH PASSING TO THE
NORTH. HOW AND EXACTLY WHERE THESE TWO SYSTEM MERGE REMAINS
UNCERTAIN, AND THIS PLAYS A BIG ROLE IN THE AMOUNT OF WIND AND
PRECIPITATION WE COULD SEE. LA
AVIATION
VFR CONDITIONS WILL PREVAIL THROUGH THE PERIOD. SOUTH/SOUTHEAST
WINDS INCREASE FROM ROSEBUD COUNTY AND EAST (KBHK, KMLS) TONIGHT
INCREASING THROUGH MONDAY MORNING AND AFTERNOON. WIND GUSTS FOR
THESE LOCATIONS ARE EXPECTED TO BE NEAR 20 KTS OVERNIGHT AND 25-35
KTS MONDAY AFTERNOON. TORGERSON
PRELIMINARY POINT TEMP/POPS
MON TUE WED THU FRI SAT SUN
-----------------------------------------------------------
BIL 035/068 041/068 038/065 043/073 049/060 038/053 033/055
00/U 00/U 00/U 00/U 38/W 61/B 11/U
LVM 035/072 039/069 037/068 040/072 041/053 030/048 029/054
00/U 01/B 10/U 00/U 49/W 61/B 11/B
HDN 034/070 036/068 036/069 039/074 046/063 037/054 031/058
00/U 00/U 10/U 00/U 27/W 71/B 01/U
MLS 042/069 039/067 039/065 046/074 050/064 039/051 034/056
00/U 00/U 00/U 00/U 14/W 61/B 01/U
4BQ 041/068 043/069 039/066 049/077 054/068 040/052 037/060
00/N 00/U 00/U 00/U 13/W 62/W 00/U
BHK 037/063 038/070 038/065 043/077 051/071 038/051 032/056
00/N 00/U 00/U 00/U 13/W 52/W 11/U
SHR 033/068 037/071 037/068 042/074 046/063 034/052 030/059
00/U 00/U 00/U 00/U 16/W 82/W 10/U
BYZ WATCHES/WARNINGS/ADVISORIES
MT...NONE.
WY...NONE.
WEATHER.GOV/BILLINGS
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